A device that used stimulation of a large skin area to impart images to the user.

Some visors came with a clip-on camera and fieldstim. The fieldstim you wore over your back, snuggled to the skin, as if ti were a sheer corset. The camera picked up an image of the street you were walking down and routed it to the fieldstim, which tickled your back in the pattern of whatever the camera saw. Some part of your mind assembled a rough image of the street out of that. Developed for blind people in the 1980's. Now used by viddy addicts who walked or drove the streets wearing visors, watching TV, reflexively navigating by using the fieldstim, their eyes blocked off by the screen but never quite bumping into anyone.